A full-body roaster open to spectators and Mudders in Mudder Village at select events, Ring of Fire requires Mudders to climb up a 25-foot scaffold structure, latch onto a fireman’s pole and plummet through a giant ring of fire and into an awaiting tank of water. Hint: Latch onto the pole tightly. Trust us.

Tough Mudder is a team-oriented 10-12 mile (18-20 km) obstacle course designed to test physical strength and mental grit. Tough Mudder puts camaraderie over finisher rankings and is not a timed race but a team challenge that allows participants to experience exhilarating, yet safe, world-class obstacles they won't find anywhere else.

Spartan Race, the world’s leading obstacle race company, will host the 2015 Reebok Spartan Race World Championship October 3-4, 2015 at the internationally renowned mountain destination Squaw Valley, Lake Tahoe.

The race is heating up. It’s time to leap over a row of real fire before you sprint your way through the final obstacles. Plan your leap accordingly: you’ll most likely make this photo op your new profile picture.

Don’t think you’ll finish this race without some mud in new places. Grind your face to the mud for 100 feet underneath real barbed wire.

Warriors aren’t made in the gym. This is a balancing act: Cross-step your way across a series of planks as wide as your foot.

Hit the deck and crawl towards the light. You came to get muddy and will leave with a few brusies. You’ve got 40 feet to crawl across. And it’s dark down there.

Get a running start and use your hops to hurdle yourself (and a friend) over three sets of barricades. Get your anterior down to the ground and scoot underneath an 80-foot canopy. Once you’re out, race over three more barricades. Beer is waiting for you at the finish!

Crawl up a cargo net and scale back down a 16-foot sheet of plywood, with cold running water, into a pit.

Don’t get caught in the web. Climb up, over, and through a tube of kinked cargo nets 12 feet in the air.